The old BS970 Parts 1 & 3: 1991 standards have been replaced by a number of EN Standards, the most important of which are shown below EN10088-3Replaces BS970 Part 1: 1991 & BS970 Part 3: 1991 covering chemical composition & mechanical properties EN10058 Tolerances for Hot Rolled Flat Bars EN10059 Tolerances for Hot Rolled Square Bars EN10060 Tolerances for Hot Rolled Round Bars EN10061 Tolerances for Hot Rolled Hexagonal Bars EN10278 Tolerances for Bright Bars (Drawn, Turned or Ground) ISO186 Parts 1 & 2 Tolerance Classifications (see page 4) TOLERANCES ~ The ISO tolerances shown are taken from ISO 286 ~ All other tolerances shown in this document are based upon the relevant part's of the applicable EN Standard's ~ For tolerances on Rolled Edge Flat Bar please refer to separate Datasheet DIAMETER - SMOOTH TURNED (These are H10 tolerances, which are 'all minus' tolerances ) Diameter (mm) Tolerance (mm) 18 to 30 +0 / -0084 31 to 50 +0 / -0100 51 to 79 +0 / -0120 DIAMETER - ROUGH TURNED (These are 'all plus' tolerances) Diameter (mm) Tolerance (mm) 75 to 150-0 / +15 151 to 225-0 / +20 226 to 410-0 / +30 [1 OF 8] CONTINUED
DIAMETER - BRIGHT DRAWN Note These are H9 Tolerances H9 Tolerances are 'all minus' tolerances: +0mm / - Figure in table Diameter (mm) Tolerance (mm) 6 to 10 +0 / -0036 11 to 18 +0 / -0043 19 to 30 +0 / -0052 WIDTH & THICKESS - HOT ROLLED SQUARE Size (mm) Tolerance (mm) + or - 75 to 150 15 151 to 225 20 226 to 410 30 THICKNESS - HOT ROLLED FLAT Size (mm) Tolerance (mm) + or - Up to 20 05 20 to 40 10 40 to 80 15 WIDTH - HOT ROLLED FLAT Size (mm) Tolerance (mm) + or - 10 to 40 075 40 to 80 10 80 to 100 15 100 to 120 20 120 to 150 25 [2 OF 8] CONTINUED
ANGLE BARS - LEG LENGTH Leg (mm) Leg Length Tol (mm) + or - Thickness (mm) + or - 20 15 04 25 15 05 30 20 05 40 & 50 20 06 60, 70, 75, 80, 90, 100 30 075 ANGLE BARS - INTERNAL RADIUS Leg (mm) Max Internal Radius (mm) 20, 25, 30 4 40 5 50, 60 7 65, 70, 75, 80 9 90, 100 10 [3 OF 8] CONTINUED
ISO 286 TOLERANCES IN MM EXAMPLES: H = All Minus Tolerance eg 45mm dia H9 = +0 / -0062 J = Tolerance Divided eg 45mm dia J9 = +/- 0031 K = All Plus Tolerance eg 45mm dia K9 = +0062/ -0 ( The K tolerance is usually only applied to larger diameter bars - over 75mm H8 = Precision Ground H9 = Bright Drawn H10 = Smooth Turned In the following table: TOLERANCE IN mm FOR GIVEN TOLERANCE NUMBER Diameter (mm) 6 7 8 9 10 11 12 13 >1 to 3 inc 0007 0009 0014 0025 0040 0060 0090 0140 >3 to 6 inc 0008 0012 0018 0030 0048 0075 0120 0180 >6 to 10 inc >10 to 18 inc >18 to 30 inc >30 to 50 inc >50 to 80 inc >80 to 120 inc >120 to 180 inc >180 to 250 inc >250 to 315 inc >315 to 400 inc >400 to 500 inc 0009 0015 0022 0036 0058 0090 0150 0220 0011 0018 0027 0043 0070 0110 0180 0270 0013 0021 0033 0052 0084 0130 0210 0330 0016 0025 0039 0062 0100 0160 0250 0390 0019-0046 0074 0120 0190 0300 0460 0022 - - 0087 0140 0220 0350 0540 0025 - - 0100 0160 0250 0400 0630 - - - 0115 0185 0290 0460 0720 - - - - - 0320 0520 0810 - - - - - 0360 0570 0890 - - - - - 0400 0630 0970 > 500 - - - - - 0440 0700 1100 [4 OF 8] CONTINUED
STRAIGHTNESS TOLERANCES FOR BRIGHT BARS Taken from BS EN 10278:1999, applicable to Bright Bars only Method of measuring deviation - Preferred Method B1 from BS EN 10278: 1 The bar shall be supported on a suitable surface so as to eliminate or minimise sagging 2 A 1 metre long straight edge shall be placed on the surface of the bar at any position along it's length No part of the straight edge shall be within 150mm of the ends of the bar 3 Straightness shall be determined by measuring the gap between the bar and the straight edge by suitable means such as a feeler guage The following table indicates: DEVIATION FROM STRAIGHTNESS Product Round Dimension Max Deviation in mm within a 1mtr length measured at least 150mm from either end of bar 10mm Square & Hexagon < or = 75mm 10mm Square & Hexagon > 75mm 15mm Flat Width < 120mm On Width: 15mm Flat Width < 120mm On Thickness: 20mm Flat Width > or = 120mm On Width: 20mm Flat Width/Thickness < 101 On Thickness: 25mm Flat Width > or = 120mm On Width: 25mm Flat Width/Thickness > or = 101 On Thickness: 30mm [5 OF 8] CONTINUED
STAINLESS STEEL GRADES The following Table lists: Stainless Steel Grades, Compositions & Typical Mechanical Properties Mechanical Properties apply to Rolled Products EN BS AISI EN No Comp Comp Comp Comp Comp Mech Mech Mech Obsolet e C Cr Ni Mo Other Proof 02%N mm Tensile Nmm Elong % 14000 403S17 410S - 008x 12 - - - 20-250 400-600 19 14002 405S17 405-008x 12 - - 02 Al 210-250 400-600 17 14003 - - - 003x 11 05 - - 250-320 450-650 18-20 14016 430S17 430 60 008x 17 - - - 240-280 430-630 18-20 14113 434S17 434-008x 17-1 - 260-280 450-630 18 14509 - - - 0015x 18 - - Nb, Ti - - - 14510-430Ti - 005x 17 - - 06 Ti 230-240 420-600 23 14511-430Nb - 005x 17 - - 06 Nb 230-240 420-600 23 14512 409S19 409-003x 11 - - 05 Ti 210-220 380-560 25 14521 - (444) - 0025x 17-2 06 Ti - - - 14006 410S21 410 56A 08-15 12 - - - 400-450 550-850 12-20 14005 416S21 416 56AM 08-015 12 - - 35xS 450 650-850 12 14021 420S29 420 56B 16-25 12 - - - 450-550 650-950 10-15 14028 420S45 420 56D 26-35 12 - - - 600 740-1000 10-15 14029 416S37 416 56CM 25-32 12 - - 35xS - - - 14057 431S29 431 57 12-22 15 2 - - - - - 14104 416S29 416 56BM 10-17 16-04 35xS 500 650-850 10 14112-440B - 85-95 17-10 01V - 900max 12 14125-440C - 95-12 17-06 - - 900max 12 14594 460S52 - - 07x 14 5 15 15 Cu 700-1000 930-1270 10 14749-446 - 15-20 26 - - 02N - - - 14301 304S31 304 58E 007x 18 8 - - 210-260 520-750 45 14303 305S19 305-006x 18 11 - - 200-250 500-650 45 14305 303S31 303 58M 010x 18 8-035xS 190-230 500-700 35 14306-304L - 0030x 18 10 - - 200-250 500-670 45 14307 304S11 304L - 0030x 18 8 - - 200-250 500-670 45 14310 301S21 301-005/0 1 17 6 - - 250-280 600-950 40 14311 304S61 304LN - 0030x 18 9-022xN 270-320 550-750 40 14372-201 - 015x 17 45-65Mn 330-380 750-950 40 [6 OF 8] CONTINUED
STAINLESS STEEL GRADES - CONT'D The following Table lists: Stainless Steel Grades, Compositions & Typical Mechanical Properties Mechanical Properties apply to Rolled Products EN BS AISI EN No Comp Comp Comp Comp Comp Mech Mech Mech Obsolet e C Cr Ni Mo Other Proof 02% Nmm Tensile Nmm Elong % 14401 316S31 316 58J 007x 17 11 2-220-270 520-680 40 14404 316S11 316L - 0030x 17 11 2-220-270 520-680 40 14406 316S61 316LN - 0030x 17 11 2 022xN 280-330 580-780 40 14432 316S13 316L - 0030x 17 11 25-220-270 520-700 40 14435 316S13 316L - 0030x 17 13 25-220-270 520-700 40 14436 316S33 316 58J 005 17 11 25-220-270 500-730 40 14438 317S12 317L - 0030x 18 13 3-220-270 520-720 35 14439 - - - 0030x 17 13 4 022xN 270-320 580-780 35 14541 321S31 321 58B 008x 18 9-05Ti 200-250 500-720 40 14550 347S31 347 58F 008x 18 9-05Nb 200-250 500-720 40 14571 320S31 (316Ti) - 008x 17 11 2 05Ti 220-270 520-690 40 14539 904S13 - - 0020x 19 24 4 2xCu 220-270 520-730 35 14547 - - - 0020x 20 18 6 1xCu 300-350 650-850 35 14833 309S16 309-015x 22 12 - - 14845 310S24 310-010x 25 20 - - 14878 321S51 321H - 010x 18 9-06TI [7 OF 8] CONTINUED
CONTACT Address: Web: Please make contact directly with your local service centre, which can be found via the Locations page of our web site wwwaalcocouk REVISION HISTORY Datasheet Updated 04 October 2016 DISCLAIMER This Data is indicative only and as such is not to be relied upon in place of the full specification In particular, mechanical property requirements vary widely with temper, product and product dimensions All information is based on our present knowledge and is given in good faith No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers data No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied Advice given by the Company to any third party is given for that party s assistance only and without liability on the part of the Company All transactions are subject to the Company s current Conditions of Sale The extent of the Company s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request [8 OF 8]